added loading placeholder

public/index.html

@@ -10,7 +10,10 @@
         <title>eco-meet</title>
     </head>
     <body>
-        <noscript>You need to enable JavaScript to run this app.</noscript>
-        <div id="root"></div>
+        <div id="root">
+            <div style="width: 100vw; height: 100vh; position: absolute; top: 0; left: 0; display: flex; justify-content: center; align-items: center">
+                <img src="leaf.svg" alt="eco-meet logo" style="width: 15%; height: 15%" />
+            </div>
+        </div>
     </body>
 </html>